ASTROSAT CZTI

Data Quality Report

Orbit 21029

Creation date: 2024-06-27T18:22:40.526800
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_075T06_9000003104_21029cztM0_level2.evt modeM0/AS1A05_075T06_9000003104_21029cztM0_level2_quad_clean.evt
Size (bytes)67,777,92018,904,320
Size64.6 MB 18.0 MB
Events in quadrant A441,548127,533
Events in quadrant B531,011132,548
Events in quadrant C461,260125,572
Events in quadrant D558,461120,285

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A017841
B022171
C018401
D022271

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83520.239521%
B83520.239521%
C83591.077844%
D835232.754491%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 834 834 0 0 0.00% 0.00%
B 834 834 0 0 0.00% 0.00%
C 834 834 0 0 0.00% 0.00%
D 834 834 20 20 2.40% 2.40%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 254 1181 42.89 114 111 24.9
A 0 226 1029 36.8 114 111 24.9
A 12 194 827 28.7 114 111 24.9
B 0 189 55559 2318.19 116 113 23.9
B 0 190 9091 375.37 116 113 23.9
B 4 216 5873 240.83 116 113 23.9
C 14 238 17891 635.13 113 114 28.0
C 13 61 833 25.69 113 114 28.0
C 0 207 586 16.86 113 114 28.0
D 6 143 59194 2035.32 113 109 29.0
D 15 0 34959 1200.49 113 109 29.0
D 1 239 13758 470.17 113 109 29.0

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter